1. Division of Diabetes and Endocrinology Department of Internal Medicine Kobe University Graduate School of Medicine Kobe Japan
2. Nakakinen Clinic Ibaraki Japan
3. TDE Healthcare Corporation TOSAKI Clinic for Diabetes and Endocrinology Aichi Japan
4. Division of Diabetes Department of Internal Medicine Aichi Medical University School of Medicine Aichi Japan
5. Division of Diabetes, Metabolism and Endocrinology Department of Internal Medicine The Jikei University Hospital Tokyo Japan